Cyber Defense Engineer – NATO (Security Clearance Required)

About the role

The Cyber Defense Engineer will protect, monitor, and defend NATO's technology infrastructure and data assets. You will operate and optimise security tools to detect, analyse, and respond to cyber threats while collaborating with IT, DevOps, and external partners.

Key responsibilities

• Monitor and analyse security events using Splunk SIEM, correlating data from endpoints, network, and vulnerability systems.
• Operate Trellix Endpoint Security and EDR to identify, contain, and remediate endpoint threats.
• Run and review Tenable Nessus vulnerability scans and coordinate remediation with IT teams.
• Manage secure software components through Sonatype Nexus, identifying vulnerable dependencies and supporting DevSecOps pipelines.
• Participate in incident response activities: detection, triage, containment, eradication, and recovery.
• Develop and maintain Splunk detection rules, dashboards, and automated alerts aligned with the MITRE ATT&CK framework.
• Document security events, maintain SOC playbooks, and support ISO 27001, NIST CSF, and GDPR compliance audits.
• Provide situational‑awareness reports and risk insights to management and stakeholders.
• Propose new use cases and optimise detection coverage to continuously improve the SOC.

Required profile

• Minimum three years of experience in Cybersecurity Operations, SOC analysis, or Incident Response.
• Strong understanding of threat detection, incident handling, and vulnerability management processes.
• Ability to manage multiple incidents in a fast‑paced operational environment.
• Excellent analytical, troubleshooting, and reporting skills.

Required skills

• Trellix Endpoint Security / ePO (EDR platform)
• Splunk SIEM
• Tenable Nessus (vulnerability scanner)
• Sonatype Nexus (software component analysis)
• Knowledge of MITRE ATT&CK, NIST 800‑61, ISO 27035 frameworks
• Familiarity with TCP/IP, DNS, HTTP/S, SMTP protocols and log analysis
• Scripting languages: Python, PowerShell, Bash